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I've deleted a table in the database, call it X. db:migrate no longer works. I have a migration file called CreateX. Is there a way to run just that specific migration?
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To run a specific migration up or down, use db:migrate:up or db:migrate:down . The version number in the above commands is the numeric prefix in the migration's filename. For example, to migrate to the migration 20160515085959_add_name_to_users. rb , you would use 20160515085959 as the version number.
i found these steps most useful. To check for status, run rails db:migrate:status . Then you'll have a good view of the migrations you want to remove. Then, run rails db:rollback to revert the changes one by one.
Rails Migration allows you to use Ruby to define changes to your database schema, making it possible to use a version control system to keep things synchronized with the actual code. Teams of developers − If one person makes a schema change, the other developers just need to update, and run "rake migrate".
rake db:migrate:redo VERSION=my_version Or you can go up or down from a specific version:
db:migrate:up VERSION=my_version db:migrate:down VERSION=my_version If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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